Rav Yitzchak Eizik Halevi Herzog, Chief Rabbi of Ireland and later Palestine (1888-1959). His father, Rav Yoel Leib Herzog (1865-1933) was Chief Rabbi of Paris. From his birth until his 16th birthday, Reb Yitzchak studied at the feet of his father. He was given smicha by Rav Yaakov Willowski (the Ridbaz, author of a peyrush on the Yerushalmi). In 1916, he was named Chief Rabbi of Belfast, Ireland. Later he served in the same post in Dublin, and later he became Chief Rabbi of all of Ireland. Following the passing of Rav Avraham Yitzchak haCohen Kook in 1935, Rav Herzog was invited to become Eretz Yisrael’s second Ashkenazi chief rabbi. He served in that capacity from 1933 until his petira in 1959. He is the author of the Heichal Yitzchok.Rav Eliezer Yehuda Finkel, Rosh Yeshivas Mir (1967). Married daughter of Rav Eliyahu Baruch Kamai (rosh yeshiva of Mir) in 1903. Between 1939 and 1941, because many business were taken over by the Soviet government, the Mir Yeshiva left Bilarus. Rav Finkel, many other rabbis and yeshiva students went to Lithuania because that country was still independent. The story of the escape of Mir Yeshiva to Shanghai during WWII has been the subject of several books. After the war, the rabbis and students founded the Mir Yeshiva in Brooklyn, New York. R. Finkel survived to establish the Mir Yeshiva in Jerusalem. Moved the yeshiva to Yerushalaim in 1944 until his petira.
Rav Yona Stenzel, initiator of Halacha Yomi and Mishna Yomi